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Flura [38]
3 years ago
6

No two people are genetically identical, except for identical twins. The main source of genetic variation among humans is

Biology
1 answer:
Musya8 [376]3 years ago
5 0

Answer:

c. the reshuffling of alleles in sexual reproduction.

Explanation:

During gametogenesis, meiosis occurs in reproductive cells. As a result, haploid gametes are produced. During meiosis, a process called ‘crossing over’ occurs in the pachytene stage of prophase I of meiosis. During crossing the chromosome segments are exchanged between non-sister chromatids of homologous chromosomes. Exchange of chromosome segment creates a new combination of genes or genetic recombination and produces hybrids. Thus, genetic variation occurs in all sexually reproducing organisms due to crossing over.    

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5 0
2 years ago
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Please help thank you
noname [10]

Answer:

adhesion

Explanation:

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8 0
2 years ago
How many sperm cells are formed from an original cell in a Drosophila fruit fly at the conclusion of meiosis?
julsineya [31]

Answer:

C. Four Haploid Sperm Cells

Explanation:

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5 0
3 years ago
based on the flow of energy and biomass in ecosystem, determine the rough proportion of producers and consumers needed in the ec
Mila [183]
The number of producers is more than consumers and top carnivores in ecosystem. for example:- in the food chain of grass--goat--man,atleast 90% of energy is pasted to other level and 10% will be stored at that level it self. 
        grass                 goat                   man
       50/100               40/80                30/60.
as we human beings depend on plants and animals for our food for our whole life we need atleast 100 numbers of small plants for one week.
5 0
3 years ago
In which order will free nucleotides add on to a single strand of DNA with the sequence ATTGCA during DNA replication? (2 points
Iteru [2.4K]

Answer:

guanine, cytosine, cytosine,adenine,thymine,guanine

Explanation:

This is because during DNA replication the complementary base pairings are Adenine and Guanine, Thymine and Cytosine.

4 0
2 years ago
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